Foot switch



FIG. 1 is a perspective view of the foot switch, showing my new design;

FIG. 2 is a rear view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a top view thereof;

FIG. 5 is a bottom view thereof; and,

FIG. 6 is a left side view thereof, the right side view (not shown) being a mirror image of the left side view.

The broken lines are included for the purpose of illustrating environmental structure and form no part of the claimed design. 

CLAIM The ornamental design for a foot switch, as shown and described. 